https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80700
--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> --- ==15430== Invalid read of size 1 ==15430== at 0xB9161C: constrain_operands(int, unsigned long) (recog.c:2583) ==15430== by 0xB92204: extract_constrain_insn(rtx_insn*) (recog.c:2212) ==15430== by 0xA840DF: check_rtl(bool) (lra.c:2128) ==15430== by 0xA88D07: lra(_IO_FILE*) (lra.c:2546) ==15430== by 0xA34E30: do_reload (ira.c:5472) ==15430== by 0xA34E30: (anonymous namespace)::pass_reload::execute(function*) (ira.c:5656) ==15430== by 0xB49315: execute_one_pass(opt_pass*) (passes.c:2467) ==15430== by 0xB49D07: execute_pass_list_1(opt_pass*) (passes.c:2556) ==15430== by 0xB49D19: execute_pass_list_1(opt_pass*) (passes.c:2557) ==15430== by 0xB49DAB: execute_pass_list(function*, opt_pass*) (passes.c:2567) ==15430== by 0x793BE9: cgraph_node::expand() (cgraphunit.c:2042) ==15430== by 0x7958DB: expand_all_functions (cgraphunit.c:2178) ==15430== by 0x7958DB: symbol_table::compile() (cgraphunit.c:2535) ==15430== by 0x797F52: symbol_table::finalize_compilation_unit() (cgraphunit.c:2625) ==15430== Address 0xafafaf010000028a is not stack'd, malloc'd or (recently) free'd